WRIGHT. 



PLATE X. 



7 8 9 10 11 12 13 14 1516 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 



Length in millimeters. 



RANGE OF TRANSFORMATION-SIZE. 



1. Bufo lentiginosus americanus. 



2. Hyla pickeringii. 



3. Hyla versicolor. 



4. Rana sylvatica. 



5. Rana palustris. 



6. Rana pipiens. 



7. Rana clamata. 



8. Rana catesbeiana 



